package com.mutual.commom.util;

import java.math.BigDecimal;

/** 
 * @author  wsl
 * @date 创建时间：2015-12-31 下午5:40:00 
 * @version 1.0     
 */
public class NumberToCNUtil {
	
	      /**
	       * 汉语中数字大写
	       */
	      private static final String[] CN_UPPER_NUMBER = { "零", "壹", "贰", "叁", "肆",
	              "伍", "陆", "柒", "捌", "玖" };
	      /**
	       * 汉语中货币单位大写，这样的设计类似于占位符
	       */
	      private static final String[] CN_UPPER_MONETRAY_UNIT = { "分", "角", "元",
	              "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟", "兆", "拾",
	              "佰", "仟" };
	      /**
	       * 特殊字符：整
	       */
	      private static final String CN_FULL = "整";
	      /**
	       * 特殊字符：负
	       */
	      private static final String CN_NEGATIVE = "负";
	      /**
	       * 金额的精度，默认值为2
	       */
	      private static final int MONEY_PRECISION = 2;
	      /**
	      * 特殊字符：零元整
	       */
	      private static final String CN_ZEOR_FULL = "零元" + CN_FULL;
	  
	      /**
	      * 把输入的金额转换为汉语中人民币的大写
	       * 
	       * @param numberOfMoney
	       *            输入的金额
	       * @return 对应的汉语大写
	       */
	      public static String number2CNMontrayUnit(BigDecimal numberOfMoney) {
	          StringBuffer sb = new StringBuffer();
	          // -1, 0, or 1 as the value of this BigDecimal is negative, zero, or
	          // positive.
	          int signum = numberOfMoney.signum();
	          // 零元整的情况
	          if (signum == 0) {
	              return CN_ZEOR_FULL;
	          }
	          //这里会进行金额的四舍五入
	          long number = numberOfMoney.movePointRight(MONEY_PRECISION)
	                  .setScale(0, 4).abs().longValue();
	          // 得到小数点后两位值
	          long scale = number % 100;
	          int numUnit = 0;
	         int numIndex = 0;
	         boolean getZero = false;
	          // 判断最后两位数，一共有四中情况：00 = 0, 01 = 1, 10, 11
	          if (!(scale > 0)) {
	             numIndex = 2;
	              number = number / 100;
	             getZero = true;
	          }
	        if ((scale > 0) && (!(scale % 10 > 0))) {
	             numIndex = 1;
	              number = number / 10;
	            getZero = true;
	         }
	          int zeroSize = 0;
	        while (true) {
	              if (number <= 0) {
	                  break;
	              }
	              // 每次获取到最后一个数
	              numUnit = (int) (number % 10);
	              if (numUnit > 0) {
	                  if ((numIndex == 9) && (zeroSize >= 3)) {
	                      sb.insert(0, CN_UPPER_MONETRAY_UNIT[6]);
	                  }
	                  if ((numIndex == 13) && (zeroSize >= 3)) {
	                      sb.insert(0, CN_UPPER_MONETRAY_UNIT[10]);
	                  }
	                  sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
	                  sb.insert(0, CN_UPPER_NUMBER[numUnit]);
	                  getZero = false;
	                  zeroSize = 0;
	              } else {
	                  ++zeroSize;
	                  if (!(getZero)) {
	                      sb.insert(0, CN_UPPER_NUMBER[numUnit]);
	                  }
	                  if (numIndex == 2) {
                     if (number > 0) {
	                         sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
	                     }
	                 } else if (((numIndex - 2) % 4 == 0) && (number % 1000 > 0)) {
	                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
	                 }
	                 getZero = true;
	             }
	             // 让number每次都去掉最后一个数
	             number = number / 10;
	             ++numIndex;
	         }
	         // 如果signum == -1，则说明输入的数字为负数，就在最前面追加特殊字符：负
	         if (signum == -1) {
	             sb.insert(0, CN_NEGATIVE);
	         }
	         // 输入的数字小数点后两位为"00"的情况，则要在最后追加特殊字符：整
	         if (!(scale > 0)) {
	             sb.append(CN_FULL);
	         }
	         return sb.toString();
	     }
	 
	     public static void main(String[] args) {
	         double money = 2020004.01;
	         BigDecimal numberOfMoney = new BigDecimal(money);
	         String s = NumberToCNUtil.number2CNMontrayUnit(numberOfMoney);
	         System.out.println("你输入的金额为：【"+ money +"】   #--# [" +s.toString()+"]");
	     }
	  }

